Messages in this thread | | | Subject | Re: [PATCH 1/1] perf, Add support for Xeon-Phi PMU | From | Peter Zijlstra <> | Date | Tue, 25 Sep 2012 14:01:26 +0200 |
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On Tue, 2012-09-25 at 15:42 +0400, Cyrill Gorcunov wrote:
> Guys, letme re-read this whole mail thread first since I have no clue > what this remapping about ;)
x86_setup_perfctr() / set_ext_hw_attr() have special purposed 0 and -1 config values to mean -ENOENT and -EINVAL resp.
This means neither config value can be a 'real' event. Now it turns out Xeon-Phi has an actual event 0, which is masked by these special case thingies.
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